RNA-seq dataset of the estrogen-dependent regulation of the transcriptome in mouse mammary gland organoids

The mammary gland development <i>in utero</i> and during life is strongly regulated by hormones. To study the genes regulated specifically by the estrogen signalling pathway in the epithelial compartment, we treated mouse mammary epithelial organoids with estradiol, the most potent endogenous estrogen. At maturity, after 11 days of treatment, organoids were collected, and RNA was purified for next-generation sequencing. The bulk mRNA-seq data obtained were verified for raw quality, and reads were pseudo-aligned on the murine reference transcriptome (Gencode vM25). Differentially expressed genes were identified using DESeq2 to gain a better understanding of the impact of estrogens on the mammary epithelial cell transcriptome <i>ex vivo</i>. These data can be reanalyzed and combined with recent single-cell RNA-seq data to study the estrogen-dependent transcriptome at the cellular level and better understand the functional impact on the mammary gland in physiopathological conditions, such as during lactation, following endocrine-disrupting chemical exposure, or through the course of carcinogenesis.